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Microsoft KB Archive/100768

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Knowledge Base

X400: Downstream Users Receive Multiple Copies of Same Message

Article ID: 100768

Article Last Modified on 10/30/2006


  • Microsoft Mail Gateway to X.400 3.0

This article was previously published under Q100768


Version 3.0 of Microsoft Mail Gateway to X.400 downstream postoffice mail recipients may receive multiple copies of the same mail message.


This problem occurs only when the message is generated by certain foreign X.400 systems and does not occur when backboning Microsoft Mail postoffices through X.400. In the following text, P1 and P2 apply to X.400 messages only.

When an X.400 message comes into the X.400 gateway with one recipient in P1 (or one recipient with P1 responsibility bit set to TRUE and the rest FALSE) and multiple P2 recipients located at a downstream postoffice (not the gateway postoffice), the X.400 gateway formats the message using all the P2 recipients for delivery.

The result is that one mail message is created and addressed to the same recipient, for as many recipients as are listed in the P2.


This problem has been corrected in version 3.2 of Microsoft Mail Gateway to X.400.

Additional query words: 3.00 3.20 X400

Keywords: KB100768